Haven't heard of site like that, is it a crypto based gambling site or fiat ?
Anyways, i suggest to be cautious when betting to unknown gambling sites especially if they've haven't posted their ANN thread here in Bitcointalk that's my primary basis to know if a gambling site is legit. If they have representatives here and a signature campaign, it increases their reputation to other customers as well.
It's no bookmaker or whatever and you don't have to pay to use it. It's the biggest site I know of, where users post their picks (in their own blogs) and where they are tracked with next to no possibility to cheat. There is a lot of garbage and abandoned blogs, but also some quite successful tipsters. Some years ago, blogabet introduced the possibility to monetize your blog, by making a paid service out of it.
Very good site to track your bets and make yourself a name, if you plan to go for paid service in the future.
As always, when you look to join a paid service, take your time to monitor things first. Don't get impressed by numbers. Even a blog that looks very successful at first sight, can be on downward trend and lose you money (on top of the fee you have to pay to access the picks).