@Lucius, I have read the posts of 'attempt_n_t' and yours on the
other thread, but I would like to give the reply here as the discussion won't be related to the main subject of that reputation thread.
~snip~ Immediately after this, Freebitco.in began to block my IP address (now I can’t collect satoshi), although there were no such problems before! I don't think this is a coincidence.
When you mention it, it was strange to me that immediately after a successful withdrawal they reduced my basic reward on the faucet, and now I have to solve the captcha, which was not the case before.
I don't know how much funds you had in your account, but the other user has said that his account balance (withdrawal amount) was 0.0038+ BTC. There is no need to complete the captcha if your Freebitco account balance stays above $100 in BTC. TheQuin has said about it a few many times in the past.
Keep a balance above $100 to play without captcha.
You may also play without captcha if your account balance remains below $100 in BTC. In that case, it depends on "
free winnings to wagered ratio" which has been described by
TheQuin here. The reduction of base reward is also related to the 'free winnings to wagered ratio'. You can verify it through
this post of TheQuin. The user 'attempt_n_t' may not face the IP block error during faucet claim if he keeps his account balance above $100 in BTC.