7 across-domino effect (5-2)
8 across-abused (3-4) ???u?o?
9 across- made up of units (7)
12 across-protect against offical policy (10)
15 across-period after your 20's and before 40's (6-9) ???r?? ???b?h?n?
19 across-use up (3-7) ??? ?t???g?
21 across-farm birds bred for food (7) ?o?l???
23 across-impure (7) ?e???a?
1 down-not refined in style (10) ????????d
2 down-talent spottrs (6)
3 down- faint-hearted (8)
4 down-touch,tinge (6) ???n??
11 down-oafish (7)
19 down-to use a mouthwash (6) ????L?
20 down- word for expressimg he time (1'5)
Me neither elliemay but some do. I think asking for unknown extras in adverts is strange or pieces of music that appear for 2 seconds in some random commercial but it's a Q&A site and so it is open for people to ask questions, no matter how strange others perceive them.