I'm writing a simple facebook group poster tool, its mainly for personal usage but I'll also release it for free on my website. The issue I'm encountering is, even with my personal very aged (I was one of the first on FB as I had a .ac.uk address!) which is phone verified when posting in groups through mbasic.facebook.com and waiting 30 seconds after a post and without a link....I'm getting a captcha challenge. Is this normal? Anyone got any tips to avoid this?