How long does it usually take to get hired by a service requester?

Under a minute if you like the bids coming in. Remember for the easier services such as baking a cake or dropping you off some milk at home will usually take less time to negotiate than building a deck or negotiating  a roof repair. Keep in mind how difficult the task is to perform for the time it will take to submit a request and buyer to accept a bid. The longer a seller has to wait there are more chance that others bidders will back out and take other jobs.