How can i avoid/block bots from entering giveaways.

@level requirement - add the thing that most of bots are lvl 0/1 alts so higher levels are much less likely to be bots anyway ;) Noone will like to invest into something he can get caught on and banned for losing all his investment.

@using descriptions+BL - won't work, because BL has limited slots. Don't want to repeat myself so: http://www.steamgifts.com/discussion/wZB9s/how-can-i-avoidblock-bots-from-entering-giveaways#65K4cBj

@invite only GAs - it's ultra easy to make a bot that will look through newly created discussions and enter GAs posted in these. Even hidden GAs as bot will probably be looking through the source code anyway - then will just pull all strings with /giveaway/ in them, and enter these GAs.

@puzzles - using puzzles is always a good solution :D:

and then what? if entrant don't answer you won't be granted reroll anyway. And if you want to blacklist everyone who doesn't follow you will run out of BL slots after 1-2 GAs ;p http://www.steamgifts.com/discussion/wZB9s/how-can-i-avoidblock-bots-from-entering-giveaways#65K4cBj

some of them do get pass some of captchas - yes, but the real problem is that captchas are actually punishing towards all normal users - you enter tens of GAs per day, so you would have to enter tens of captchas. you'd spent significantly more time on entering. It would be even more discouraging for not-hardcore users who don't spend a lot time on the site, just log in for a short while once a day to quickly enter GAs and leave - they would have to spend much more time doing this and it would disencourage them. And ad-revenue-wise they are more important than hardcore users - because there's much more of them, which means much more unique viiews on ads, while hardcore user seeing same ad over again will grant much less money.

private GA - unless it's hidden beside puzzle it's not bot-safe. Bots can easilly scan forums for even hidden GAs,

blacklist - after 1-2 public GAs you will run out of BL slots: http://www.steamgifts.com/discussion/wZB9s/how-can-i-avoidblock-bots-from-entering-giveaways#65K4cBj

and will run out of BL slots in no time :D:

Registered: 22 hours ago. Prepare for a long wait, dude.
facepalm

Does anyone really have any issues with users who enter giveaways without thanking? I think it's only about winner not showing gratitude.

To be honest that's an incredibly weak arguement. How hard is to write something semi-creative instead of thanks?
" Thank you, I've seen my friend playing this game, got me intrested, thanks for the givaway" or something like that takes like 10 seconds to write. It's really not hard to write something relevant to user's name, profile pic, game banner, giveaway level, description, game genre, previous good experiences with the game/prequels or sequels/ the genre. Or even opening the users's profile and checking lastly played games and asking him/her about how he liked it, what would he recommend or something like that.
It's so phenomenally easy to write something creative that proves you're not scripting...