If you're returning, that's no prob. The only thing regarding pop-in-pop-outters is in the shiny dex. It's not fair for whole bunches of random members to join, fill the dex, then never participate in the club, so your contributions to the dex only become "permanent" once you get 30 posts in the club.
Haunter Master said:
(never leave your room when theres a 2 year old in the house)
Hey, I could've told you that! ;) Thankfully, there are locks on the doors in my house and I also usually keep my Fire Red in my pocket inside some handheld. 2-year-olds aren't all bad, considering I found my shiny Porygon while slacking off while babysitting one. He's 3 now, and not quite so malignant, so I'll be okay.
I've now raised all my shinies (excluding HipHoppip) to at least L50 in Fire Red, so it's back to Poliwag fishing, I suppose. A shiny Politoed would be rather awesome. (Shiny Poliwrath has this ugly, Oscar the Grouch Green thing going on, so I'll pass. Unless my Poliwag is Adamant or something, maybe.) There's a 60% chance of fishing out a Poliwag, 20% Magikarp, and 20% Goldeen at Four Island for the Good Rod. Super Rod chances are no better and I might end up with a Psyduck, which isn't too cool. Both Gyarados and Seaking are nice as shiny, so I don't mind.