Craigslist + Gumtree auto-post app req

References / previous work of a similar nature required. Offers with "We can do this" will be IGNORED -- I require a cronjob based application/code or something similar which sits on a 3rd party Linux server (or my Linux server) which posts simple ads (with one or two images) regularly to [login to view URL] for Great Britain / Europe etc. I also need it to post to [login to view URL] for London / other regions etc. Nothing illegal or unauthorised which will get me banned from these sites please. I don't mind what language it is written in, as long as I can make changes to the ad details, and create new ads and adjust posting times/locations easily.