One of many purposes of the ad - selling goods and services (but not driving everyone crazy by annoying messages via any possible way). Goods and services have different properties, even different logic/behavior - services usually are repeating, they have duration time, start date, finish date; physical goods can be sold peace by peace (with inventory control for example), non-physical goods (like software) can be sold as many times as it needed. Also there exists auction way of selling anything - the seller put start price and customers increase price in fight between each other to have this item.

Keeping in mind all this 'zoo' with items we buy and sell, i would like to design and develop the 'selling' constuctor - the engine, which allows to anyone to start his/her very own p2p business. On my main job I took part on development of very different solutions - e-shops, auctions, catalogues; I have used ebay, other selling engines; on one of my previos jobs I have developed applications for the Vantive CRM system, so I decided to try to develop a universal (as much as possible for me) and simple (as much as possible too) selling engine for Joomla!

Btw, if you want to know about the new releases - press the RSS button in the right top corner and subscribe for the new releases feed. If you know nothing about the RSS feed - maybe it is the time to start of using of this feature, it is worth studying (imho). Also, I do not collect your emails to annoy you about my own problems - this is not my way. The Email address is just part of Joomla user object, so you can use fake email address (but then you'll never receive notification about a possible answer on your possible question on this website).