Pokerstars was the first poker site I ever used back in 2001.
After that I drifted off to various others sites with superior software, but many of these were decimated but the USA fiasco and not enough players led to not enough of the games I enjoy (mostly Omaha Hi/Lo).
So I have now come full-circle and am back at PS - just about the only site I use now.
I've never had any problems with them and agree with Pokeraddict - totally trustworthy!