Typical affiliate bonus offer to get something free. Not hard at all to clear, when I first started playing online I got Hold'em Indicator free with a SportsBook signup, but once I cleared the minimum hands to use it elsewhere, I pretty much stopped playing there.
As much as I love HEM and want to support them, if you do this instead of signing up for rakeback, you'll hate yourself later. You got an $80 piece of software for free, but forever miss out on hundreds/thousands of potential RB money if you stick to playing any volume. Especially at micro stakes, where without RB it's very hard to be profitable due to the inordinate amount of rake you pay.
So I'd suggest you forget the freebie affiliate offers for FullTilt and go for RB instead. Maybe if it's to another site that you never intend to play at once you clear the minimum points/hands, it might be worthwhile, but with a big site like FT where you will likely settle if you stay in the game long, you want to get that RB. It'll make that free $80 look like chump change by comparison.
One word of warning if you intend to sign up for RB: clear all your browser cookies first, especially if you've clicked on any affiliate links (like the HEM link) while just looking around. Even if you didn't signup, if the affiliate cookie is still in place, your signup could actually be directed to that affiliate instead of the RB affiliate, and you're screwed.