I saw this over at the official St.Louis site and thought I would post it for reference material.

Got questions about how NFL free agency works? Stlouisrams.com has the answers. In an ongoing series, we'll be taking a look at 2009 free agency by position. The lists below categorizes each player by what type of free agent he is and gives and explanation of what those types of free agents are. The signing period for veteran free agency and the trading period begin on Feb. 27, 2009. Click below for a position-by-position preview.
Free Agent Previews: Quarterback | Running Back | Wide Receiver | Tight End | Offensive Line | Defensive Line | Linebacker | Defensive Backs | Specialists

Rams Free Agents
FS Oshiomogho Atogwe (UFA)
CB Ron Bartell (UFA)
DE Victor Adeyanju (RFA)
RB Travis Minor (UFA)
WR Dante Hall (UFA)
WR Dane Looker (UFA)
C Nick Leckey (UFA)
C Brett Romberg (UFA)
T Adam Goldberg (UFA)
G Richie Incognito (RFA)
G Mark Setterstrom (RFA)
T Brandon Gorin (UFA)
DE Eric Moore (UFA)
DT La’Roi Glover (UFA)
LB Gary Stills (UFA)
CB Fakhir Brown (UFA)
CB Jason Craft (UFA)
CB Ricky Manning Jr. (UFA)

Free Agent Dates to Know
Feb. 19 – Franchise/Transition tag deadline
Feb. 26 – The last day teams can make tender offers to restricted free agents
Feb. 27 – Free agency begins

Franchise and Transition Tag Numbers
The quarterback franchise number is $14.65 million and the transition figure is $12.44 million.
The wide receiver franchise number is $9.88 million and the transition figure is $8.39 million.
The offensive line franchise number is $8.45 million and the transition figure is $7.74 million.
The running back franchise number is $6.62 million and the transition figure is $5.92 million.
The tight end franchise number is $4.46 million and the transition figure is $4.07 million.
The defensive end franchise number is $8.99 million and the transition figure is $7.78 million.
The defensive tackle franchise number is $6.06 million and the transition figure is $5.45 million.
The linebacker franchise number is $8.3 million and the transition figure is $7.48 million.
The safety franchise number is $6.34 million and the transition figure is $5.13 million.
The cornerback franchise number is $9.96 million and the transition figure is $8.37 million.
And the franchise number for a punter/kicker is $2.48 million and $2.26 million for a transition figure.

2009 NFL Restricted Free Agent Compensation
First and Third Round compensation - $2.792 million offer to a player requires any team trying to sign the player to trade a first and third round choice in this year’s NFL Draft.
First round compensation - $2.198 million offer to a player requires any team trying to sign the player to trade a first-round choice in this year’s NFL Draft.
Second round compensation - $1.545 million offer to a player requires any team trying to sign the player to trade a second round choice in this year’s NFL Draft.
Original round compensation - $1.01 million offer to a player requires any team trying to sign the player to trade a draft pick commensurate with where said player was originally drafted.
(Note: Making a qualifying offer allows the original team matching rights on any outside contract offers. Should the original team decline to match the offer, compensation is then awarded)

Free Agent Terms & Definitions (source: KFFL)
There are five types of free agents, with each type having different abilities when it comes to being able to move around the league. Those five types are as follows:
- Unrestricted Free Agents (UFA) - Players with four years or more of NFL experience who can sign with their own team or any other team in the NFL. If they leave their previous team the team that signs them can do so without having to award the previous team compensation.
- Restricted Free Agents (RFA) - Players with three years of NFL experience. Like an unrestricted free agent they are free to negotiate with any team however the current team has the right to match any offer and if they do so they retain the rights to the player. Failure to meet the offer means the player is awarded to the new team but the new team must give the old team compensation in the form of draft picks.
- Exclusive-Rights Free Agents (ERFA) - Players with two or fewer years of experience who have no outside negotiating power. Their rights belong to their previous club provided they are made a minimum qualifying offer.
- Franchise Free Agents (FFA) - Unrestricted free agents who have been designated as the "Franchise" player. Current team has the right to match any offer. If they refuse they are given compensation by the new team the player has signed to play for.
- Transitional Free Agents (TFA) - Players who can negotiate with any club but current team retains matching rights.