@ 1. Craigslist style email obfuscation as a service. problem: i have a marketplace type website where my users would like to be contacted but not have their e

@ 1. Craigslist style email obfuscation as a service. problem: i have a marketplace type website where my users would like to be contacted but not have their emails be made public. how it works: i set a subdomain of my site, mail.mysite.com to an ip address you designate. on demand, i make an api call to your service (emailobfuscationasaservice.com) with { real_address:foo@bar.com, expiration_timestamp:2014-01-20T00:00:00.000Z, obfuscate_replies: true / false, callback_url: (optional) } emailobfuscationasaservice.com responds with either a success message and an anonymized, temporary email address like 239fag72wa@mail.mysite.com (the subdomain i gave you) or an error message like "no such user at that domain" or "domain doesn't exist" or something. the email address lives until the expiration timestamp. if the obfuscated email receives a message, you forward it to the "real_address". if "obfuscate_replies" was set to true at email creation time, then if the person responds, you play middleman for both parties and force all their emails to go through you (basically you create another obscured email for person who writes to the obscured email). if "callback_url" was set, that means that I, the operator of mysite.com, want to be notified of activity at the obscured email address, so you POST activity to the specified url. that lets me do things like update activity feeds in my app for the user. If you build this, I will pay for it. @ 2. support page as a service. copy these: http://supportdetails.com/ http://supportdetails.com/ http://www.browser-details.com/ http://www.browser-details.com/ Sell more aggressively. @ 3. Basecamp for travel planning (I imagine this already exists). I am on a trip with some friends right now. We have ideas for stuff we want to do but its all poorly organized in email and google spreadsheets. Basically the things we want to do are: tourist sites, activities, food. A cool app would let us create a group like in basecamp, state our destination, then let us start typing things in we want to do. those get matched to existing review sites or links that contain information about them and put on a map. in an unfamiliar place this is useful because it lets me group items/events geographically and plan my trip better. it would let people plan an itinerary together, asyncronously and make comments on possible activities for the group. (other smart features: places to stay, modes of transportation, notes like "don't forget to get your visa by date XXX"). Basically a crud app. how to monetize? no idea. affiliate commissions on airbnb, event tickets, etc? i want it, wouldn't build it. the backend isn't hard, getting the UI right would be a challenge.