1. See if they are on Facebook
2. See if their friends are on Facebook
3. See if any of their family are on Facebook
4. See if they are on Friends Reunited
5. Try a Google search for them, put their name in quotations when you do
6. See if they have a Twitter account
7. How about trying a BT Direct Enquiries search, you might get their phone number
8. Have you tried Bebo
9. What about MySpace
10. You should have a look to see if they have an account on LinkedIn
11. Do they have a blog
12. Check Whois, do they own a website?
13. Have you been to the local council offices and looked at the Electoral Register
14. Have you tried your local library
15. Try asking other friends of the person if they know where they are
16. Try a search to locate the persons family, do you know where their parents live
17. What about trying a previous employer
18. Try an Electoral Roll Search
19. Try an historical electoral roll search
20. If you think they own a house try a Land Registry search
21. If you think they live abroad try a White Pages search
22. Look at 123people.co.uk
23. Have a look at Pipl
24. Try Companies House, maybe they are a company director
25. Check other versions of their name, maybe they spell it slightly different
26. Search for their partner, they may be easier to trace
27. Try a People Finder UK search
28. Try neighbours at their previous address, maybe they know where they went
29. Try other people with the same surname, maybe they are relations
30. Did they play any sports, could you contact the team they played for
31. Did they have any unusual Hobbies
32. If they did maybe they are on websites connected with these Hobbies
33. Try birth records
34. Try Death records, sad but if they are old you should consider it
35. Try marriage records, maybe your old girlfriend found true love
36. National Archives have some fantastic search tools
37. Ancestry is the shizzle when it comes to family tree research
38. Put messages out looking for the person,
39. Try people search blogs
40. Try people search sites
41. Could they be in the Military
42. Have you looked at MSN groups
43. Try Yahoo
44. What about dexonline
45. 192.com
46. Try a reverse charges phone call
47. Try anywho.com
48. What about a Lycos People Search
49. Check out FinderMonkey.co.uk
50. If they are in business try Ziggs
51. Look at the local paper listings and stories
52. Maybe it’s not them you are looking for, maybe you are looking for love
53. If you are try online dating
54. If you know they live locally get out and about, you might just bump into them
55. Try Peoplesearch-uk.co.uk
56. Try Missing.co.uk if the person is missing rather than just lost
57. In Scotland? Try ScotlandsPeople.gov
58. Pick up the phone book
59. Have a look at FreeIndex
60. Blog search engines
61. Have a look into Zaba
62. Write a blog about them, promote it in the local area online
63. If you desperate you could start a website
64. Tweet about the person you are looking for
65. Try a Search Engine reverse search

Good luck finding ways to find people you have lost touch with