I own 2 groups of software professionals (Has 2524 and 1437 members). I can post about your website in my groups. I will send atmost 3 messages per day that too only if the website is computer/software related. Muliple packages available A sticky post in the group with 2524 members $5/month. Non sticky post in both the group $5. Non sticky post in group with 2524 members $3. Non sticky post in group with 1437 members $2. Advantages are your post reaches most of the members who are interested in software, also the post stays visible for a long time. Reply here or PM me for details.