Did anyone else notice this?

Well, Sam was stripping for money, but Brody was a male prostitute, not stripper, it think it's a totally different "weight".
Brody shouldn't have build a relationship with Rachel while doing something like that. It was very wrong, it's not surprising her フレンズ were ragining on him for that.

Actually, I think there was a difference. Sam was stripping because he needed money to help support his family. Sure it was wrong but at least his intentions are noble. While Brody actually was worse then a stripper, and he was in a relationship with Rachel so what he was doing was worse.

:et me make this clear. Sam was a stripper. Brody was a prostitute.There's a HUGE difference between being a stripper and a prostitute.
When you're a stripper あなた are not having sex for money. You're just taking your clothes off with no physical contact.
When you're a prostitute, あなた are having sex with people for money.
Even though both Sam and Brody stated that they were doing this because they needed money, their situations were very different.
Sam was a stripper because his family needed extra money. Sam was also NOT dating anyone.
Brody was a prostitute because he needed help paying for his tuition. But Brody was dating Rachel.
Since Brody was dating (and having sex with) Rachel while he was a prostitute, He put her health in danger. With all the women Brody has had sex with, one of them could have had an STD and Brody could have gotten it and passed it on to Rachel.
Also, Brody straight up lied about it whereas Sam didn't.

That's why they were mad at Brody and not Sam. :)

Totally! And besides Santana, Puck and Brittany slept with so many guys/girls for free and nobody compains about them. Brody is a gigolo but only because he needs money for college and it's not a bad thing, yes he didn't tell Rachel but they weren't exactly on a relationship and if they were then she also lied to him because she slept with Finn on the Wemma's wedding. Agree, everyone is being so unfair with the guy, he's not a bad dude. Just saying.